Fuel preheating and mixing device



April 7, 1953 J. D. GODFREY 2,533,337

FUEL PREHEATING AND MIXING DEVICE Filed May 16, 1951 Fly. 6

John David Godfrey INVENTOR.

M -MW Patented Apr. 7, 1953 1 UNITED STATES PATENT QFFICE y M I I2,633,837 g FUEL PREHEATING AND MIXING DEVICE John David Godfrey,Cincinnati, Ohio Application May 16, 1951, Serial N0. 226,695

3 Claims.

. The present invention relates to certain new and useful improvementsin ways and means whereby the efficiency of operation of an internalcombustion engine may be better achieved while at thesame timeeconomizing on'fuel, and has more particular reference to a simple andpracticaldevice which is installed in a downdraft conduit affordingcommunication between a carburetor and complemental intake manifold.vMore specifically, the invention appertains to a ready-to-installadapter which fits between the usual gasket-equipped flanges of thecoacting carburetor and intake manifold parts. A perforated tube, calleda preheater, is mounted in the adapter and this forcibly shoots exhaustgases into the air. and gas mixture. The thus picked up gasis conveyedto and introduced in opposite ends of the preheater tube by way of.branch pipes which latter-are attached to forward and rear end portionsof the usual exhaust manifold. I

Novelty is predicated on an adapter with a tube spanning the usualcircular opening in the adapter, thetube having a, multiplicity ofdischarge holes therein and end portions of the tube extendingbeyonddiametrically opposite sides of the margin of the adapter toaccommodate the statedi branch'pipes.

Further novelty is predicated on creating an unusually, novel turbulousaction at the point of installation of the adapter by utilizing branchexhaust gas delivery pipes which attach to the exhaust manifold, oneclose to the front cylinder and one close to the rearmost cylinder,whereby to bring about an alternate source of impulses. The exhaustgases are thus alternately and forcibly fed into diametrically oppositesides of a distributing preheater tube and the turbulous activity andforces thus applied mix the exhaust gases with the air and fuel gasesand, in addition, assist in driving the mixture down through the conduitor duct into the cylinders by way of the intake manifold.

Other objects and advantages will become more readily apparent from thefollowing description and the accompanying sheet of illustrativedrawmgs.

In the accompanying sheet of drawings wherein like numerals are employedto designate like parts throughout the views:

- Figure 2 is an enlarged horizontal section, with parts in elevationand section, taken on the line 22 of Figure 1, looking in the directionof the arrows; and,

Figure 3 is .a longitudinal sectional view taken on the plane of theline3-3 of Figure 2 showing the adapter and preheater and spray pipe per se.

Referring now to Figure 1,.the internal combustion engine, as anover-allassembly; is denoted by the numeral 4. The overheaddowndrafttype carburetor is denoted at 6 and the intake manifold meansat8 and the exhaust manifold means at It. The forward and rearwardbranches, respectively, of the exhaust manifold aredenoted-by thenumerals I2 and I4. These are, of course, on oppositesidesof the conduitor passage in which the. improved attachment means is installed. Themeans comprises a commonly shaped insert or adapter plate I6 havingapertured lugs or end portions I8 and 28 whereby said adapter is boltedbetween the usual coacting flanges on thecarburetor and intake manifoldmeans, this as shown in Figure 1. The main body portion 22 has acircular passage 24 therein which registers with the passage in thestated conduit made up of thecarburetor, intake manifold and exhaustmanifold, The distributing, preheating and spray tube is denoted by thenumeral 26 and this is a small tube which extends across the center ofthe opening 24 and has its n Q Q S S it bl m un e in m s e 23-28provided therefor in the body 22. The end portions of the tube extend tothe exterior where they are threaded as at 30-3ll. The multiplicity ofdistributing and spraying holes are denoted at 32-32. Two duplicatepick-up and delivery pipes of small gauge are employed and these aredenoted by the numerals 34 and 36, respectively. They are joined bysuitable unions or couplings 38-38 with the threaded ends 30-30 of thepreheater tube 23. These pipe lines are distinct in that they functionin alternate progression. That is to say, the end 40 of the front pipe34 is joined to the front branch I2 of the exhaust manifold within thevicinity of the foremost or front cylinder. On the other hand, thecorresponding end of the pipe 36 is joined as at 42 to the rear endportion of the rear branch I4 of the exhaust manifold where it is inclose proximity to the rearmost cylinder. The stronger impulses of thesetwo cylinders alternately project gases under pressure first into thepipe 34 and then into the pipe 36. The minor impulses in theintermediate portions of the branches I2 3 4 and I4 functionin betweenbut it is the principal manifold and a carburetor, said intake manifoldand forcible impulses with which we are here and carburetor havingopposed flange means,an concerned because they not only pick up andadapter plate bolted between the flange means, shunt the exhaust gasesinto the conduit by way said adapter plate having a central opening forof the spray pipe 26 but produce suflicient explo- 5 passage of fuel, aperforated tube mounted in sive pressures in the region of the opening24 to said adapter plate and having its perforated porcreate a turbulousaction. This turbulent effect tion spanning said opening, and forwardlyand not only better mixes the air and gas coming rearwardly directedbranch pipes connected with down through the-conduit but aresultantprodthe respective endportions of said tube, the foruct offuflgas, fir aridheatdeihaustigases=-is f wa'rd end- 'ofthefforward.plpe' being-lijoined with had. It has b'er'i foii fid frofnexperimentation the exhaust manifold at a point in close proxthat theextra pressure thus obtaining in this imity to the foremost cylinder inthe engine, and area plus the preheated and different mixtur the rearend of the remaining pipe being joined enables the attachmentto-funetiongas a definite "Fto the rear endiportion of th xhau tmanifold economy device, one which materiallyinc'reases -1.5 1 4 t q tcylinder in said engine mileage because it utilizes heateci ekli'a'iistgass "'3, *Fdfu'se'inbonjunction t an te 1 plu r ular f l an brn a g a-ig ter n bus'tion engme which includes, as essential commoreefficien c n mp i f the v ll fuel ponents an exhaust manifold, an intakemanifold product. an'd acarburetor operatively associated there- With te inve fi pe y installed, one with, said intake manifold and carburetorhavdoes not=*haveto use -high octane-:gasoline. -In ingiop ogedflangemeans;;a.fu]f'-15reheittmg nd f h p "s 'soli11eoreven60%finer-oil. such mixing device' adapted= tobeinterposed betweenasused'in' 'dieselerigines'will do. =Wha-tis-more, m :gmt 'fifing'e am aa i'cbmp'fismg r the user will observe no annoying knocks and ada-pteriplate h j ingia central Iop'eningan'd a w gs -c1iz'nbing hills,are buy smoke" from th perforatedtube embodied m saidiiplate andliavexhaust pipe Jnd Wil *abtli'ally' S9V *0n' f e ing its: perforatedpdrtion egistry with 'said itscost-and;-despite 'itall,will-notethabthe"en- :gg wayo mng:gn i vmg gine power is appreciablyincreased. -e'd in the *marg-inall portions f thei p'late and Theinvntion resides, "at is -'believed, the projecting ibeyondsaidimarg'iria portionsfiaforcombinationshown n--Flg1'1r'e l and'-the-sub'c'om- '*3'0 weirdlydisposable bfiiirich pifie anda bination-pha'ses depicteddn 'l igures 2' an'd3'rerear'wardly disposable b rlch'spectively. v being connected' at' theirerespectiveflinner ends V=Havin'g thus dscribd' theinvention, whatis t lprojefing l nd'fgp rt nYbf ega' 5am- CIaJiI'nedaS I'iW-AS: I '-'rated tube, the rorward 'rid bfthe fd'i w-aid 1. -ln a striitural asseniblageof the class'depipe-beingadapte -to beijo'ined it exhaust scr'ibedfiineombir'iation,"an intriial 'coinbustion mg f c ap' m ir c1658 itp g m gZtoTfth-e engine includin n nets: "-haanifold, an 'inforemost oylindr inSal engine, arid the learefid take inanifold arid carburetor, 1 said'='intake 6f t remajning piplbeifigizgjdaptditoibe joined manifoldand}carburetor havirig}opp flan I tothe rear end portion of the eic-hust nia'inmeans. "an daptr plat d 't efiw n' i foldclose' tothe'rearmostcynrider 'in"said em 'fla'r'ige'-'nieans 'said dapte plateliaving -a cen- 1 JGLNDAVIUGODFRJEY.

ZREFERENCESHCIHQED 21,110,788 scribed, 'in combination, 13,382,285

